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Finding the Fourth Proportional to 392,061.49, 540,845.37 and 256,174.88

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Solution

The fourth proportional to 392,061.49, 540,845.37 and 256,174.88 is: 353,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,061.49 : 540,845.37 = 256,174.88 : x
  2. Step 2: Convert to fraction form
    392,061.49/540,845.37 = 256,174.88/x
  3. Step 3: Cross multiply
    392,061.49x = 540,845.37 × 256,174.88
  4. Step 4: Simplify right side
    392,061.49x = 138,550,995,054.08
  5. Step 5: Solve for x
    x = 138,550,995,054.08/392,061.49
  6. Step 6: Final answer
    x = 353,390.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.